供应LY1026 0.9-6.5V 300KHZ DC/DC升压IC

The LY1026 series is a CMoS step-up switching regulator which mainly consists of a reference voltage source,an oscillation circuit, an error amplifier, a phase compensation circuit, a PWM/PFM switching control circuit.With an external low-ON-resistance Nch Power MOs,this product is applicable to applications

requiring high efficiency and high output current. The LY1026 series switches its operation to the PFM control circuit whose duty ratio is 15 % with to the PWM/PFM switching control circuit under a light load and to prevent decline in the efficiency by IC operation current.

  Features

Low vltage operation: Start-up is guaranteed from 0.9 V(IOUT=1 mA)

Duty ratio: Builtin PWMPM switching control circuit 15 to 78 %。

oscillator frequency: 300KHz

External parts: coil, diode, capacitor, and transistor

Output voltage range: 1.5V ~20 v

Output voltage accuracy: +2%

Soft start function: 2 ms.

PACKAGE: SOT-23-5

  Typical Application

Mobile phones (PDC, GSM, CDMA, IMT200 etc.)

Bluetooth equipment

PDA

Portable communication modem

Portable games

Cameras

Digital cameras

Cordless phones

Notebook computers

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